private FileVerificationResult ValidateFile()

in JetBrains.SbomUtils/src/JetBrains.SbomUtils/SbomValidator.cs [89:130]
36 lines of code
7 McCabe index (conditional complexity)

    private FileVerificationResult ValidateFile(IInstalledSoftwareProvider installedSoftwareProvider, string installationFile, List<FileInfo> sbomFiles, HashSet<Package> packagesHashSet)
    {
      var filesFromReferencedPackages = sbomFiles.Where(f => packagesHashSet.Contains(f.Package)).ToList();
      var hashAlgorithms = sbomFiles.SelectMany(f => f.File.Checksums).Select(c => c.Algorithm).Distinct();

      var hashesDictionary = installedSoftwareProvider.CalculateFileHashes(installationFile, hashAlgorithms);

      if (filesFromReferencedPackages.Any())
      {
        HashVerificationFailure? hashVerificationFailure = null;

        foreach (var sbomFile in filesFromReferencedPackages)
        {
          hashVerificationFailure = ValidateHashes(hashesDictionary, sbomFile);
          if (hashVerificationFailure == null)
            break;
        }

        return new FileVerificationResult(installationFile, hashVerificationFailure == null, hashVerificationFailure, null);
      }
      else
      {
        HashVerificationFailure? hashVerificationFailure = null;
        FileFromUnreferencedPackage? fileFromUnreferencedPackage = null;

        foreach (var sbomFile in sbomFiles)
        {
          hashVerificationFailure = ValidateHashes(hashesDictionary, sbomFile);
          if (hashVerificationFailure == null)
          {
            fileFromUnreferencedPackage = new FileFromUnreferencedPackage(sbomFile);
            break;
          }
        }

        return new FileVerificationResult(
          installationFile,
          hashVerificationFailure == null && fileFromUnreferencedPackage == null,
          hashVerificationFailure,
          fileFromUnreferencedPackage);
      }
    }